Æthelred Mucel in the context of Gainsborough, Lincolnshire

Ealhswith or Ealswitha (died 5 December 902) was the wife of King Alfred the Great. She was the mother of King Edward the Elder who succeeded King Alfred to the Anglo-Saxon throne. Her father was a Mercian nobleman, Æthelred Mucel, Ealdorman of the Gaini, which is thought to be an old Mercian tribal group. Her mother was Eadburh, a member of the Mercian royal family and her lineage was one of the primary reasons for Alfred taking Ealhswith as his wife. She founded the nunnery of Nunnaminster.

The Gaini were an Anglo-Saxon tribe which occupied part of the kingdom of Mercia.

The Gaini are only recorded in Asser's life of King Alfred the Great, written in 893, which stated that in 868, before he became king, Alfred married Ealhswith, daughter of Æthelred, known as Mucel, ealdorman of the Gaini. Mucel witnessed Mercian charters between 814 and 866, with two subscribing in the 830s and 840s. They may be father and son, with the later one being Ealhswith's father. The older was probably "Mucel son of Esne" recorded in a Mercian charter of 836. Esne attested Mercian charters in the late eighth and early ninth centuries. Ealhswith's father attested two West Saxon charters in 868, the year his daughter married Alfred.